616.

[Via Facebook chat]
Ghost Friend Says: “Ciao, Si!”
What I Say: “Hey. What’s up?”
What I Think: “I have so long ago stopped caring about this acquaintanceship that the only time I remember I need to delete you from my Facebook is when you pop up in my chat for a conversation that consist of two heys, a brb, and dead silence. Why can I never remember to delete you?”